This Week in Social is a weekly digest of some of the biggest stories in social media marketing news. These stories are the show notes for the Brave Ad World Podcast. Each story is discussed at a deeper level on the podcast.

This week’s headlines: Facebook Launches Paper, Pinterest Previews Interest Feature, Facebook's Q4 2013 Shows Strong Mobile Growth and Twitter Launches Search for Media Partners.

The week’s news quick hits: Twitter's Android App Update Makes Editing Photos Easier, Tech Companies Reach Agreement with Government on Data Request Disclosures, Twitter Adds Search Filters and Foursquare Allows Users to Order Food in GrubHub Partnership.